:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#172033;background:#f4f6f8;line-height:1.5}*{box-sizing:border-box}body{margin:0}.shell{max-width:860px;margin:0 auto;padding:32px 18px 60px}.card{background:#fff;border:1px solid #dfe4ea;border-radius:14px;padding:28px;box-shadow:0 8px 28px rgba(20,30,50,.06)}h1{margin-top:0;font-size:1.8rem}h2{font-size:1.3rem;margin-top:0}.muted{color:#657080}.notice{padding:14px 16px;background:#f6f8fb;border:1px solid #dfe4ea;border-radius:10px;margin:16px 0}.progress{font-size:.9rem;color:#657080;margin-bottom:12px}.scenario{font-size:1.03rem;white-space:pre-wrap}.field{margin:18px 0}.field>label,.label{display:block;font-weight:650;margin-bottom:7px}.choice{display:block;border:1px solid #cfd6df;border-radius:10px;padding:12px 14px;margin:9px 0;cursor:pointer}.choice:hover{background:#f8fafc}.choice input{margin-right:10px}.likert-row{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}.likert-row label{border:1px solid #cfd6df;border-radius:8px;padding:7px 10px;min-width:38px;text-align:center}.anchors{display:flex;justify-content:space-between;font-size:.82rem;color:#657080;margin-top:4px}.button{display:inline-block;border:0;border-radius:9px;background:#1f5eff;color:white;padding:11px 18px;font-weight:650;cursor:pointer;text-decoration:none;margin-right:8px;margin-top:8px}.button.secondary{background:#eef2f7;color:#233047}.button:disabled{opacity:.5;cursor:not-allowed}input[type=text],input[type=email],input[type=number],select,textarea{width:100%;padding:10px 11px;border:1px solid #cfd6df;border-radius:8px;font:inherit}textarea{min-height:110px}.consent-row{display:flex;gap:10px;align-items:flex-start;margin:12px 0}.consent-row input{margin-top:5px}.error{background:#fff0f0;color:#8a1f1f;border:1px solid #f2bcbc;padding:11px;border-radius:8px;margin:14px 0}.success{background:#effaf2;color:#1d6a35;border:1px solid #bde7c8;padding:11px;border-radius:8px;margin:14px 0}.admin-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}pre{white-space:pre-wrap;overflow:auto}.ai-box{border-left:4px solid #667085;background:#f7f8fa;padding:14px 16px;margin:18px 0}.separator{height:1px;background:#e7ebef;margin:24px 0}.small{font-size:.88rem;color:#657080}@media(max-width:600px){.shell{padding:14px 10px 36px}.card{padding:20px;border-radius:10px}.button{width:100%;margin-right:0}.anchors{gap:12px}}
.servia-promo{padding:20px;border:1px solid #dfe4ea;border-radius:12px;background:linear-gradient(135deg,#f8fafc 0%,#eef3ff 100%)}.servia-promo h2{margin:4px 0 8px}.servia-promo p{margin:0 0 8px}.servia-kicker{font-size:.78rem;font-weight:800;letter-spacing:.16em;color:#44506a}
/* Servia study theme: decorative only; decision alternatives and AI advice remain condition-neutral. */
:root{--servia-navy:#030438;--servia-slate:#71728f;--servia-mist:#aec1c2;--servia-pale:#f2f5f6;--servia-ink:#17192f;--servia-border:#d8dde5;color:var(--servia-ink);background:#eef1f4}
body{background:linear-gradient(180deg,#eef1f4 0%,#f8f9fb 38%,#f4f6f8 100%)}
.shell{max-width:900px}
.card{border-color:var(--servia-border);box-shadow:0 12px 34px rgba(1,2,54,.08)}
h1,h2{color:var(--servia-navy)}
.muted,.progress,.small{color:#686b7e}
.notice{background:#f3f5f8;border-color:#d9dee6}
.button{background:var(--servia-navy)}
.button:hover{filter:brightness(1.12)}
.button.secondary{background:#e7ebef;color:var(--servia-navy)}
.choice{border-color:#cfd5df;background:#fff}
.choice:hover{background:#f7f8fa;border-color:#aeb5c2}
.ai-box{border-left-color:var(--servia-slate);background:#f5f6f8}
.separator{background:#dfe3e9}
input[type=text],input[type=email],input[type=number],input[type=password],select,textarea{border-color:#cbd2dc;background:#fff}
input:focus,select:focus,textarea:focus{outline:2px solid rgba(113,114,143,.28);outline-offset:1px;border-color:var(--servia-slate)}
.study-brand{display:flex;align-items:center;gap:18px;margin:-4px 0 26px;padding:14px 16px;background:var(--servia-navy);border-radius:12px;color:#eef4f4}
.study-brand img{width:160px;height:160px;object-fit:contain;display:block;flex:0 0 auto;background:transparent;border:0;border-radius:0;padding:0;box-shadow:none}
.study-brand-research{font-weight:700;font-size:.96rem;line-height:1.35;color:#f7f9fa}
.study-brand-platform{margin-top:5px;color:var(--servia-mist);font-size:.88rem}
.site-footer{text-align:center;margin:16px 0 0;color:#777b8d;font-size:.78rem;letter-spacing:.04em}
.servia-promo{border-color:#cbd2dc;background:#030438;color:#f5f7f8}
.servia-promo h2{color:#f5f7f8}
.servia-promo p{color:#d9e2e3}
.servia-promo .button{background:#eef4f4;color:var(--servia-navy)}
.servia-kicker{color:var(--servia-mist)}
.servia-promo-logo{display:block;width:160px;height:160px;object-fit:contain;margin:0 0 10px}
@media(max-width:600px){.study-brand{gap:12px;padding:11px 12px}.study-brand img{width:112px;height:112px}.study-brand-research{font-size:.88rem}.study-brand-platform{font-size:.8rem}.servia-promo-logo{width:120px;height:120px}}

/* Responsive research UI: layout-only refinements, identical across conditions. */
.shell{width:100%;max-width:900px;padding:clamp(10px,3vw,32px) clamp(10px,2.5vw,24px) clamp(32px,5vw,64px)}
.card{min-width:0;padding:clamp(16px,3vw,30px)}
h1{font-size:clamp(1.45rem,2.65vw,2rem);line-height:1.24;overflow-wrap:break-word}
h2{font-size:clamp(1.2rem,2.1vw,1.45rem);line-height:1.3;overflow-wrap:break-word}
p,.notice,.scenario,.field,.choice{overflow-wrap:break-word}
input,select,textarea,button{max-width:100%}
button,.button{white-space:normal;text-align:center;min-height:44px}
.choice{min-width:0;min-height:44px;line-height:1.5}
.consent-row>input{flex:0 0 auto}
.consent-row>label{min-width:0;overflow-wrap:break-word}
.study-brand{min-width:0;gap:clamp(10px,2vw,18px);padding:clamp(12px,2vw,16px)}
.study-brand>div{min-width:0;flex:1}
.study-brand img{width:clamp(88px,18vw,160px);height:auto;aspect-ratio:1/1;max-width:38%;flex:0 0 auto}
.study-brand-research{font-size:clamp(.85rem,1.6vw,1rem);overflow-wrap:break-word}
.study-brand-platform{font-size:clamp(.8rem,1.3vw,.93rem);overflow-wrap:break-word}
.servia-promo{padding:clamp(14px,3vw,22px)}
.servia-promo-logo{width:clamp(104px,20vw,160px);height:auto;aspect-ratio:1}
.likert-row{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:clamp(3px,.8vw,8px)}
.likert-row label{display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:0;min-height:48px;padding:6px 2px;gap:2px;cursor:pointer}
.likert-row input{margin:0;accent-color:var(--servia-navy)}
.anchors{gap:12px}
.anchors span{max-width:48%;min-width:0}
.anchors span:last-child{text-align:right}
.servia-end-link{margin:20px 0 0;font-size:.93rem}
.servia-end-link a{color:var(--servia-navy);font-weight:650;overflow-wrap:anywhere}
@media(max-width:600px){
 .shell{padding:12px 10px 36px}
 .card{padding:clamp(14px,4vw,20px)}
 .study-brand{margin:0 0 22px}
 .study-brand img{width:clamp(76px,21vw,112px)}
 .study-brand-research{font-size:clamp(.82rem,2.5vw,.9rem)}
 .study-brand-platform{font-size:clamp(.77rem,2.35vw,.84rem)}
 .likert-row label{font-size:.92rem}
}
@media(max-width:360px){
 .shell{padding:8px 6px 28px}
 .card{padding:13px}
 .study-brand{gap:9px;padding:10px}
 .study-brand img{width:clamp(66px,20vw,80px)}
 .study-brand-research{font-size:.8rem;line-height:1.28}
 .study-brand-platform{font-size:.75rem;line-height:1.3}
 .likert-row{gap:3px}
 .likert-row label{padding:5px 0;font-size:.86rem}
 .anchors{font-size:.76rem}
}